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Current Opinion in Lipidology

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https://www.readbyqxmd.com/read/28338522/developments-in-intestinal-cholesterol-transport-and-triglyceride-absorption
#1
Yared Paalvast, Jan Freark de Boer, Albert K Groen
PURPOSE OF REVIEW: To discuss recent advances in research focused on intestinal lipid handling. RECENT FINDINGS: An important strategy in reducing atherosclerosis and risk of cardiovascular events is to increase the rate of reverse cholesterol transport, including its final step; cholesterol excretion from the body. The rate of removal is determined by a complex interplay between the factors involved in regulation of intestinal cholesterol absorption. One of these factors is a process known as transintestinal cholesterol excretion...
March 23, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28338521/ethnicity-lipids-and-cardiovascular-disease
#2
Katia Gazzola, Rens Reeskamp, Bert-Jan van den Born
PURPOSE OF REVIEW: The prevalence of cardiovascular disease differs among ethnic groups and along geographic boundaries. At present, most of the projected increase in mortality from cardiovascular disease occurs in sub-Saharan African, Chinese and Southeast Asian populations. Ethnic disparities in the prevalence of cardiovascular disease coincide with quantitative and qualitative differences in risk factors for cardiovascular disease. High plasma cholesterol is one of the most important preventable causes of ischemic heart disease...
March 23, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28333714/novel-regulators-of-plasma-lipid-levels
#3
Natalia Loaiza, Federico Oldoni, Jan A Kuivenhoven
PURPOSE OF REVIEW: To highlight very recent studies identifying novel regulatory molecules and mechanisms in plasma lipid metabolism. RECENT FINDINGS: Two novel regulatory mechanisms of LDL receptor (LDLR) intracellular trafficking have been described. The "COMMD/CCDC22/CCDC93" and "Wiskott-Aldrich syndrome protein and SCAR homologue" complexes were found to be involved in LDLR endosomal sorting and recycling, whereas the GRP94 was shown to protect LDLR from early degradation within the hepatocyte secretory pathway...
March 22, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28333713/micrornas-and-lipid-metabolism
#4
Binod Aryal, Abhishek K Singh, Noemi Rotllan, Nathan Price, Carlos Fernández-Hernando
PURPOSE OF REVIEW: Work over the past decade has identified the important role of microRNAs (miRNAS) in regulating lipoprotein metabolism and associated disorders including metabolic syndrome, obesity, and atherosclerosis. This review summarizes the most recent findings in the field, highlighting the contribution of miRNAs in controlling LDL-cholesterol (LDL-C) and HDL-cholesterol (HDL-C) metabolism. RECENT FINDINGS: A number of miRNAs have emerged as important regulators of lipid metabolism, including miR-122 and miR-33...
March 22, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28323660/impact-of-rare-variants-in-autosomal-dominant-hypercholesterolemia-causing-genes
#5
Sebastiano Calandra, Patrizia Tarugi, Stefano Bertolini
PURPOSE OF REVIEW: The systematic analysis of the major candidate genes in autosomal dominant hypercholesterolemia (ADH) and the use of next-generation sequencing (NGS) technology have made possible the discovery of several rare gene variants whose pathogenic effect in most cases remains poorly defined. RECENT FINDINGS: One major advance in the field has been the adoption of a set of international guidelines for the assignment of pathogenicity to low-density lipoprotein receptor (LDLR) gene variants based on the use of softwares, complemented with data available from literature and public databases...
March 18, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28301373/rediscovering-scavenger-receptor-type-bi-surprising-new-roles-for-the-hdl-receptor
#6
Menno Hoekstra, Mary Sorci-Thomas
PURPOSE OF REVIEW: Scavenger receptor BI (SR-BI) is classically known for its role in antiatherogenic reverse cholesterol transport as it selectively takes up cholesterol esters from HDL. Here, we have highlighted recent literature that describes novel functions for SR-BI in physiology and disease. RECENT FINDINGS: A large population-based study has revealed that patients heterozygous for the P376L mutant form of SR-BI showed significantly increased levels of plasma HDL-cholesterol and had increased risk of cardiovascular disease, demonstrating that SR-BI in humans is a significant determinant of cardiovascular disease...
March 15, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28301372/news-on-the-molecular-regulation-and-function-of-hepatic-low-density-lipoprotein-receptor-and-ldlr-related-protein-1
#7
Bart van de Sluis, Melinde Wijers, Joachim Herz
PURPOSE OF REVIEW: Clearing of atherogenic lipoprotein particles by the liver requires hepatic low-density lipoprotein receptor (LDLR) and LDLR-related protein 1 (LRP1). This review highlights recent studies that have expanded our understanding of the molecular regulation and metabolic functions of LDLR and LRP1 in the liver. RECENT FINDINGS: Various proteins orchestrate the intracellular trafficking of LDLR and LRP1. After internalization, the receptors are redirected via recycling endosomes to the cell surface...
March 15, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28207434/leveraging-information-from-genetic-risk-scores-of-coronary-atherosclerosis
#8
Themistocles L Assimes, Elias L Salfati, Liana C Del Gobbo
PURPOSE OF REVIEW: Genome-wide association studies (GWAS) have identified ∼60 loci for coronary artery disease (CAD). Through genetic risk scores (GRSs), investigators are leveraging this genomic information to gain insights on both the fundamental mechanisms driving these associations as well as their utility in improving risk prediction. RECENT FINDINGS: GRSs of CAD track with the earliest atherosclerosis lesions in the coronary including fatty streaks and uncomplicated raised lesions...
February 14, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28169871/dietary-adherence-and-cardiovascular-risk
#9
Deepak Bhatnagar
No abstract text is available yet for this article.
February 6, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28169870/the-role-of-registries-and-genetic-databases-in-familial-hypercholesterolemia
#10
Iris Kindt, Pedro Mata, Joshua W Knowles
PURPOSE OF REVIEW: To review how leveraging familial hypercholesterolemia registries can impact molecular genetic research and precision medicine. RECENT FINDINGS: Familial hypercholesterolemia is both much more common and more phenotypically heterogeneous than previously thought with some evidence for significant genotype to phenotype correlations. Genetic testing for familial hypercholesterolemia is becoming both more widely available and cheaper, spurring conversations about its clinical utility...
February 6, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28169869/low-density-lipoprotein-receptor-mutational-analysis-in-diagnosis-of-familial-hypercholesterolemia
#11
Mafalda Bourbon, Ana C Alves, Eric J Sijbrands
PURPOSE OF REVIEW: To present up to date evidence on the pathogenicity of low-density lipoprotein receptor (LDLR) variants and to propose a strategy that is suitable for implementation in the clinical work-up of familial hypercholesterolaemia. RECENT FINDINGS: More than 1800 variants have been described in the LDLR gene of patients with a clinical diagnosis of familial hypercholesterolaemia; however, less than 15% have functional evidence of pathogenicity. SUMMARY: The spectrum of variants in the LDLR identified in patients with clinical familial hypercholesterolaemia is increasing as novel variants are still being reported...
February 6, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28157722/genotype-guided-diagnosis-in-familial-hypercholesterolemia-clinical-management-and-concerns
#12
Paul N Hopkins, Stacey R Lane
PURPOSE OF REVIEW: In this review, we examine benefits and concerns associated with genetic testing in the clinical management of familial hypercholesterolemia (FH). RECENT FINDINGS: Application of next-generation sequencing and other advances provide improved yield of causal mutations compared with older methods and help disclose underlying pathophysiology in many instances. Concerns regarding clinical application of genetic testing remain. SUMMARY: More widespread application of genetic testing for FH in the USA may be forthcoming...
February 2, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28157721/complexity-of-mechanisms-among-human-proprotein-convertase-subtilisin-kexin-type-9-variants
#13
Jacqueline S Dron, Robert A Hegele
PURPOSE OF REVIEW: There are many reports of human variants in proprotein convertase subtilisin-kexin type 9 (PCSK9) that are either gain-of-function (GOF) or loss-of-function (LOF), with downstream effects on LDL cholesterol and cardiovascular disease (CVD) risk. However, data on particular mechanisms have only been minimally curated. RECENT FINDINGS: GOF variants are individually ultrarare, affect all domains of the protein, act to reduce LDL receptor expression through several mechanisms, are a minor cause of familial hypercholesterolemia, have been reported mainly within families, have variable LDL cholesterol-raising effects, and are associated with increased CVD risk mainly through observational studies in families and small cohorts...
February 2, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28134664/the-walking-dead-macrophage-inflammation-and-death-in-atherosclerosis
#14
Mary M Kavurma, Katey J Rayner, Denuja Karunakaran
PURPOSE OF REVIEW: To highlight recent studies that describe novel inflammatory and signaling mechanisms that regulate macrophage death in atherosclerosis. RECENT FINDINGS: Macrophages contribute to all stages of atherosclerosis. The traditional dogma states that in homeostatic conditions, macrophages undergo apoptosis and are efficiently phagocytosed to be cleared by a process called efferocytosis. In advanced atherosclerosis, however, defective efferocytosis results in secondary necrosis of these uncleared apoptotic cells, which ultimately contributes to the formation of the characteristic necrotic core and the vulnerable plaque...
January 27, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28134663/sr-b1-and-pdzk1-partners-in-hdl-regulation
#15
Bernardo L Trigatti
PURPOSE OF REVIEW: To outline the roles of SR-B1 and PDZK1 in hepatic selective HDL cholesterol uptake and reverse cholesterol transport and the consequences for atherosclerosis development. RECENT FINDINGS: Much of our understanding of the physiological roles of SR-B1 and PDZK1 in HDL metabolism and atherosclerosis comes from studies of genetically manipulated mice. These show SR-B1 and PDZK1 play key roles in HDL metabolism and protection against atherosclerosis...
January 27, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28092276/asialoglycoprotein-receptors-as-important-mediators-of-plasma-lipids-and-atherosclerosis
#16
Suleiman A Igdoura
PURPOSE OF REVIEW: This review seeks to describe the role of the asialoglycoprotein receptor (ASGR) in modulating non-HDL lipoprotein levels, platelet numbers and atherosclerosis. RECENT FINDINGS: Genetics studies have revealed that ASGR haplodeficiency provides protection from atherosclerosis. The potential interactions of ASGR with LDL receptor may regulate the rate of LDL uptake and as a result may lower plasma non-HDL cholesterol. ASGR clears senescent platelets and induces the expression of hepatic thrombopoietin...
January 13, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28092275/mechanistic-insights-from-combining-genomics-with-metabolomics
#17
Fotios Drenos
PURPOSE OF REVIEW: Metabolomics directly measure substrates and products of biological processes and pathways. Based on instrumentation and throughput advances, the use of metabolomics has only recently become feasible at the population level. This has led to an intense interest in using the new information in combination with genomics, and other omics technologies, to give biological context to the rapidly accumulating associations between genes and diseases or their risk factors. RECENT FINDINGS: The use of metabolomics-genomic associations for the metabolic characterization of genes of interest has confirmed known pathways and permitted the identification of new ones...
January 13, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28059953/lipoprotein-a-new-insights-from-modern-genomics
#18
Mehdi Afshar, George Thanassoulis
PURPOSE OF REVIEW: Lipoprotein(a) [Lp(a)] is the strongest independent genetic risk factor for both myocardial infarction and aortic stenosis. It has also been associated with other forms of atherosclerotic cardiovascular disease (CVD) including ischemic stroke. Its levels are genetically determined and remain fairly stable throughout life. Elevated Lp(a), above 50 mg/dl, affects one in five individuals worldwide. RECENT FINDINGS: Herein, we review the recent epidemiologic and genetic evidence supporting the causal role of Lp(a) in CVD, highlight recommendations made by European and Canadian guidelines regarding Lp(a) and summarize the rapidly evolving field of Lp(a)-lowering therapies including antisense therapies and Proprotein Convertase Subtilisin/Kexin Type 9 inhibitors...
January 5, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28059952/atp-citrate-lyase-genetics-molecular-biology-and-therapeutic-target-for-dyslipidemia
#19
Amy C Burke, Murray W Huff
PURPOSE OF REVIEW: ATP-citrate lyase (ACLY) has re-emerged as a drug target for LDL cholesterol (LDL-C) lowering. We review ACLY as a therapeutic strategy, its genetics, its molecular and cellular biology, and also its inhibition. RECENT FINDINGS: ACLY is a critical enzyme linking glucose catabolism to lipogenesis by providing acetyl-CoA from mitochondrial citrate for fatty acid and cholesterol biosynthesis. Human genetic variants have been associated with enhanced growth and survival of several cancers, and with attenuated plasma triglyceride responses to dietary fish oil...
January 5, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28059951/human-genetic-insights-into-lipoproteins-and-risk-of-cardiometabolic-disease
#20
Nathan O Stitziel
PURPOSE OF REVIEW: Human genetic studies have been successfully used to identify genes and pathways relevant to human biology. Using genetic instruments composed of loci associated with human lipid traits, recent studies have begun to clarify the causal role of major lipid fractions in risk of cardiometabolic disease. RECENT FINDINGS: The causal relationship between LDL cholesterol and coronary disease has been firmly established. Of the remaining two major fractions, recent studies have found that HDL cholesterol is not likely to be a causal particle in atherogenesis, and have instead shifted the causal focus to triglyceride-rich lipoproteins...
January 5, 2017: Current Opinion in Lipidology
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